Improving the hydrophilicity of metallic surfaces by nanosecond pulsed laser surface modification
Source abstract
Abstract
The objective of this work was to investigate the surface wettability alteration of the titanium and 316L grade stainless steel by nanosecond pulsed laser processing method. For this purpose, various processing conditions were studied extensively. Different analyses, including the study of the surface morphology, free energy, oxidation, and roughness changes, were assessed in correlation with wettability. It is shown that laser processing in air up to 1 J/cm2 laser fluences enhances the surface roughness which in turn promotes the hydrophilicity. The shape and distribution of the created surface structures are also effective in this regard. On the other hand, the surface free energy as well as oxygen content also increases significantly on the laser-irradiated surfaces. According to these results, it is more logic to conclude that all of these cooperative chemical and physical changes are involved in increasing the surface wettability and causing it to be more hydrophilic.
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Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Laser Material Processing Techniques · Laser-induced spectroscopy and plasma
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Iran University of Science and Technology Department of Physics, , Tehran 1684613114, Iran
Optics, Laser and Photonics Institute, Amirkabir University of Technology , Hafez Street, Tehran 15875-4413, Iran and , Hafez Street, Tehran 15875-4413, Iran
Optical Measurement Laboratory, Amirkabir University of Technology , Hafez Street, Tehran 15875-4413, Iran and , Hafez Street, Tehran 15875-4413, Iran
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